Senior IT Java Developer

United States Digital Space LLC

📍 toronto, on, Canada

Full-time Other-General

Job Description

Job Summary We are seeking a Senior Java Developer / Architect to design, build, and operate scalable, event-driven, cloud-native applications using Apache Kafka, Spring Boot, and Microsoft Azure. The ideal candidate combines strong hands‑on engineering with architectural ownership of distributed systems, messaging patterns, and data‑intensive services.

Key Responsibilities Architecture & Design

Design event‑driven architectures using Kafka with ownership of event contracts, versioning, and schema evolution

Define service interaction patterns (REST vs Kafka, sync vs async)

Lead architecture and design reviews focused on scalability, resiliency, and security

Own non‑functional requirements including latency, throughput, scalability, and capacity planning

Kafka & Messaging

Design topic, partition, replication, retention, and consumer group strategies

Implement producers and consumers with correct delivery semantics